Thunderbird Support Forum

I added the United States Holiday Calendar to my Thunderbird Calendar.

As it has zilliions more holidays than I care to see (World Pneumonia Day, for example) I would like to remove it. I added it as an internet supplied calendar, not stored on my computer.

Can someone please tell me how to remove it entirely? Also, is there a different, more modest calendar I might add somewhere out there?

Thanks in advance for the assistance. I have searched for a way to do this but have not found anything.

Jeff

Hi, I was trying to set up Thunderbird, but I noticed that the calendar was showing incorrect date+time. I did find a very similar issue very similar issue, but that seems to be because of flatpak (which probably isn't the issue here because I am on MacOS).

Current Time (real, also shown in Mac Menu Bar in screenshot): 03:52 of September 23rd. Time shown by Thunderbird: 22:30 (of the previous day apparently - Sept 22nd).

(Also note how the time shown on the calendar has two days combined. Ideally, 22nd Sept and 23d Sept shouldn't be together in the "Day" view).

Additional note: For fun, I created a new event for 23rd Sept at what seems like 01:30. After creating the event, the time seems to be set to 07:00 (which should be right, assuming that the "Waking Up" event is supposed to be at 09:00). Note that if I open the "Waking Up" event, the time is correctly shown.

ThunderBird Information: 115.2.3 (64-bit)

System Information: MacOS Sonoma - Version 14.0 (23A339)

System Timezone is set to be the same as the one in ThunderBird (Automatic Timezone setting in ThunderBird was even more wrong, by more than a day).

Please forgive me if I missed something too obvious.

i tried to import a csv file from outlook.com to thunderbird, and all the values are in the wrong fields. E-mail addresses and names of every contact are in the wrong fields. For instance, if I have 100 contacts, I have to edit them individually in Thunderbird after importing the file. This is not helpful. Is there a way to convert the file so I don't have to do this? Please advise.

When I enter an event on Thunderbird, it is immediately reflected on my online Google Calendar. However, when I enter the event on google calendar website, it does not automatically appear on my Thunderbird Google Calendar. Don't understand this. The only add-on I have on Thunderbird is the 'Provider for Google Calendar' (to allow bidirectional access to google calendar). I don't see any settings to fix this. Help! Note: It updates when I press 'synchronize' on Thunderbird, but I don't want to have to remember to do that. Should be automatic!!

Thunderbird 115.1.0. R/W to a Google calendar using Provider.

I cannot dismiss calendar reminders. The Error console message for the failure gives:

rea[calGoogleCalendar] Modifying item [xxxxx] failed:2147500037: {

"error": {
 "errors": [
  {
   "domain": "calendar",
   "reason": "forbiddenForNonOrganizer",
   "message": "Shared properties can only be changed by the organizer of the event."
  }
 ],
 "code": 403,
 "message": "Shared properties can only be changed by the organizer of the event."
}

}

I saw an archived question outlining this exact problem (well, the exact error, not sure if it was with Provider/Google), but there didn't seem to be any resolution provided. I believe that I am not the event organizer for many, if not most, if not all, of the events for which I'm trying to dismiss the reminders, but I'm simply trying to dismiss a reminder. Some of the events are recurring, others are singles - it doesn't seem to make a difference.

Grateful for any help; I'm sitting at about 70 reminders I cannot dismiss.

I updated to the new Thunderbird 115. I imported my folders etc with no issue with only 1 little problem - my local folders are in between my 2 email accounts and I can't seem to move it down but not a big deal.

The real problem is my calendar events. I had a very full calendar and after the update, my calendar is empty and blank. I have no idea what to do. Everything else imported fine. The calendar is the only calendar I use. Hope someone can help.

Thank you Norma

Since TB 115, I have issues with the "invite" functionality of Lightning, as follows.

It generates errors as follows:

• "invite" does not work. I can add emails to be invited to an event, but the invite is then not sent at least with the option "notify" + "send individual mail" (other alternatives such as open visible list of destinatories are not feasible due to privacy)

• when opening an "event" from the calendar, it displays in a full-screen format (see screenshot_2) that lists all invited attendees

• The "invite attendees" window works but has a strange pink block on top right (see screenshot_3)

• the page where the format of sending ("notify", "send individual mails") is not accessible any more

Currently the calendar as such works fine. But the "invite" function is critical for the use I am giving as transnational NGO to invite to meetings etc. All worked fine with previous TB versions.

System config: WIN10 prof, all updates installed, fully licensed, AMD Ryzen 9 5900X etc. (mid-end system built in 2022).

Thanks for looking into a solution.

Klaus

Have not found a way (yet) to sort or filter my Lightening Calendar Events by an assigned "category ID".

I've also not been able to find an extension or add-on that may address such a capability.

For example: I have a series of medical appointments scheduled throughout an upcoming year or any time-frame. I would like to be able to sort or filter on the category ID that I've created for those appointments.

It is likely possible that I've overlooked an obvious option or even add-on, but so far No Joy.

Creating a "Task" is a possibility, but Tasks will not appear in the Lightening Calendar display.

Any suggestions please?

I am evaluating TB and the integrated calendar. I had no problem installing mail and calendar in terms of synching, mailing, and receiving except one: The calendar page will not refresh unless I hit the Hide/Show eye icon next to the calendar. Sometimes it also shows if I toggle from Today to Week.

Calendar properties do not show any options at the bottom for refresh cycles (see attachment). Other specs are below.

This is a show stopper for me, since appointments that were transferred but not showing are of no use. Please advise.

Thanks, Michael Clifford Details below

TB Synch - Periodic Synch set to 1 minute Win 10 Home Imap Mail Server outlook.office365.com checks for msgs every 3 minutes TB 91.9.0 (64-bit) Provider for Exchange ActiveSync

Just a couple of days ago, Google calendar no longer syncs with Thunderbird. I didn't change any settings and it looks like I can't even re-add the Google calendar events it should sync to.

Hi, I use new version 115.1.0. When creating calendar event and adding attendees, they don't get the invite and I don't see the message that sent in sent items folder. Please assist

Hello,

Just started using Thunderbird for its calendar, but I can't find the settings for Calendar Events. I am aware that I can select a specific calendar and go to its Properties Window, but I want to access the app's settings for all calendars. Research shows that there should be a Calendar tab in the app's settings tab, but it isn't there for me. I only have the General, Composition, Privacy & Security, and Chat tabs. Can someone please help me get this tab to appear?

Thanks!

Please, explain me, what does the "wrench" icon means? I have some events, which I do not receive notifications from. And these events are marked by the "wrench" icon.

This morning there was an update to Thunderbird. When I reopen the program I can no longer see the right end of the screen. There is no toolbar to scroll over to see that side, and I've been unable to resolve this in the settings. I am using Density > Compact and I do not have any add-ons installed. See screen capture. I will have to stop using TB if this can't be resolved.

hi, I'm using the same TB Calendar setup for a while (3 years), in February 2024, calendar sync became erratic with showing under TB Calendar a warning : your agenda is temporarily unavailable, some events did not sync . but for the last couple of days, I'm unable to sync any events from my yahoo calendar towards TB calendar. the tbsync shows OK, reports no errors in log. could you help please , this is quite urgent matter for me. Thanks lot Phil

I have exported the calendar entries to an ics file. When I try to import them on another PC it fails with an error indicating something about the entries having dismissed an alert and needing to be read only. How do I get around this?

I recently upgraded (and then downgraded) to 102 release but was very disappointed to note that the release disables the very useful WebDAV and tbsync add-ons that are mission critical for me to sync my calendars from my hotmail and google accounts in and out of Thunderbird. These work great on TB 91 release and I had hoped that the new release will either provide support for various calendars (Google and Microsoft at the very least) out of the box or preserve the calendar sync support using the existing add-ons at a minimum.

Is there a way to make these calendars sync in Thunderbird 102 release? If so, please help. - Thanks a ton!